`jef.us`

DNSSEC	⚠️ Not signed
A	172.104.21.218^{🇺🇸 AKAMAI-LINODE-AP172.104.16.0/20 Akamai Technologies}
		PTR	`li1840-218.members.linode.com`
NS	`ns1.hover.com` ⭐
		A	2604:4000:0:d:216:40:47:26^{🇨🇦 TUCOWS2604:4000::/48 -BRA-IPV6-BLK1.1/NET-2604:4000}
			PTR	`ns1.hover.com`
		A	216.40.47.26^{🇨🇦 TUCOWS216.40.47.0/24 -BRA-BLK1.4/NET-216-40-47-0}
			PTR	`ns1.hover.com`
NS	`ns2.hover.com`
		A	2604:4000:2800:d:64:99:148:13^{🇨🇦 TUCOWS-32604:4000:2800::/37 Tucows.com Co.}
			PTR	`ns2.hover.com`
		A	64.98.148.13^{🇨🇦 TUCOWS-364.98.144.0/20 Tucows.com Co.}
			PTR	`ns2.hover.com`
MX	`in1-smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com`⁽²⁰⁾
		A	202.12.124.216^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`google-site-verification=b02G1SxMS5LAAonXrYV2cjq3-a0C2GYT1qyuseITNHI`
TXT	`v=spf1 include:spf.messagingengine.com ?all`
SOA	`ns1.hover.com`dnsmaster@hover.com serial=1720468336

`us`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.cctld.us` ⭐
	NS	`b.cctld.us`
	NS	`f.cctld.us`
	NS	`k.cctld.us`
	NS	`m.cctld.us`
	NS	`n.cctld.us`
	NS	`w.cctld.us`
	NS	`x.cctld.us`
	NS	`y.cctld.us`
	SOA	`a.cctld.us`admin@tldns.godaddy serial=1782074311

Previously NS for

jef.us

Same first word

jef.it

jef.com.ph

jef.works

jef.cc

jef.cz

jef.jp

jef.com.br

jef.yt

jef.se

jef.co

jef.dk

jef.org.hk

jef.hopto.org

jef.es

jef.no

jef.com.hk

jef.org

jef.info

jef.fm

jef.tips

jef.de

jef.or.kr

jef.org.uk

jef.net

jef.ee

jef.at

jef.sakura.ne.jp

jef.com

jef.ch

jef.or.jp

jef.sk

jef.me

jef.im

jef.us

jef.com.au

jef.eu

Similar names

efj.co

efj.com.tw

fje.in

efj.store

ejf.cl

efj.co.za

jfe.ch

efj.ru

efj.in

jfe.com.tw

ejf.ru

efj.net

efj.cn

ejf.se

fej.net

jfe.cloud

jfe.at

fej.se

fej.one

efj.us

efj.ir

ejf.it

efj.co.jp

fje.pl

fej.it

ejf.de

jfe.be

fje.org

jfe.org

jfe.ru

efj.eu

fje.com

jfe.net.au

fej.me

fje.ca

ejf.no

ejf.us

fje.ch

jfe.name

ejf.com.au

efj.pw

fej.de

jfe.dk

efj.nl

ejf.cn

fej.com

fej.org

efj.it

fej.ca

ejf.com

fje.no

fej.hu

efj.dk

ejf.net

fje.is

ejf.org.uk

fje.ru

fje.net

jfe.enterprises

efj.cz

fej.dk

ejf.com.ua

jfe.cz

fej.ch

efj.com

fje.je

ejf.cc

ejf.info

fje.cl

fje.be

fje.se

jfe.fr

fje.com.cn

ejf.com.cn

fej.edu.br

ejf.es

ejf.org

DNS History

13 records (5 active, 8 former)

○NSjef.us2015-09-03 → 2016-12-27 · 4 obs

● 2015-09-03 21:33:44
● 2016-12-27 06:42:46
○ 2020-05-17 03:26:52
○ 2026-06-21 21:08:46

○NSns1.holtzman.net2015-09-03 → 2016-12-27 · 4 obs

● 2015-09-03 21:33:44
● 2016-12-27 06:42:46
○ 2020-05-17 03:26:52
○ 2026-06-21 21:08:46

●NSns1.hover.com2020-05-17 → 2026-06-21 · 3 obs

○ 2016-12-27 06:42:46
● 2020-05-17 03:26:52
● 2026-06-21 21:08:46

○NSns2.holtzman.net2015-09-03 → 2016-12-27 · 4 obs

● 2015-09-03 21:33:44
● 2016-12-27 06:42:46
○ 2020-05-17 03:26:52
○ 2026-06-21 21:08:46

●NSns2.hover.com2020-05-17 → 2026-06-21 · 3 obs

○ 2016-12-27 06:42:46
● 2020-05-17 03:26:52
● 2026-06-21 21:08:46

○MXcatfish.media.mit.edu2015-09-03 → 2016-12-27 · 4 obs

● 2015-09-03 21:33:44
● 2016-12-27 06:42:46
○ 2020-05-17 03:26:52
○ 2026-06-21 21:08:46

○MXdogfish.media.mit.edu2015-09-03 → 2016-12-27 · 4 obs

● 2015-09-03 21:33:44
● 2016-12-27 06:42:46
○ 2020-05-17 03:26:52
○ 2026-06-21 21:08:46

●MXin1-smtp.messagingengine.com2026-06-08 → 2026-06-21 · 3 obs

○ 2020-11-29 07:46:46
● 2026-06-08 06:51:56
● 2026-06-21 21:08:46

●MXin2-smtp.messagingengine.com2026-06-08 → 2026-06-21 · 3 obs

○ 2020-11-29 07:46:46
● 2026-06-08 06:51:56
● 2026-06-21 21:08:46

○MXmx.media.mit.edu2020-05-17 → 2020-11-29 · 5 obs

○ 2016-12-27 06:42:46
● 2020-05-17 03:26:52
● 2020-11-29 07:46:46
○ 2026-06-08 06:51:56
○ 2026-06-21 21:08:46

●A172.104.21.2182020-11-29 → 2026-06-21 · 3 obs

○ 2020-05-17 03:26:52
● 2020-11-29 07:46:46
● 2026-06-21 21:08:46

○A18.27.76.152020-05-17 → 2020-05-17 · 4 obs

○ 2016-12-27 06:42:46
● 2020-05-17 03:26:52
○ 2020-11-29 07:46:46
○ 2026-06-21 21:08:46

○A18.85.28.812015-09-03 → 2016-12-27 · 4 obs

● 2015-09-03 21:33:44
● 2016-12-27 06:42:46
○ 2020-05-17 03:26:52
○ 2026-06-21 21:08:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	m.cctld.us, k.cctld.us, b.cctld.us, y.cctld.us...	-
jef.us	ns1.hover.com, ns2.hover.com	-

✅ Authoritative Response

Server:64.98.148.13

NS records: ns1.hover.com, ns2.hover.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jef.us (unsigned zone)

⏱️ Timing

Total: 723ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.104.21.218`
NS	2	`ns1.hover.com, ns2.hover.com`
MX	2	`in2-smtp.messagingengine.com (pri: 20), in1-smtp.messagingengine.com (pri: 10)`
TXT	2	`google-site-verification=b02G1SxMS5LAAon, v=spf1 include:spf.messagingengine.com ?`
SOA	1	`ns1.hover.com dnsmaster.hover.com`

Analysis

IP Addresses

jef.us directs to one IP number, which is 172.104.21.218.

Among the host names that share IP numbers with jef.us are hostmaster.glesnes.net, mx.hexnook.com, drworm.com and two others.

Name Servers

The NS records for jef.us delegate to ns1.hover.com and ns2.hover.com.

jef.us has the same name server delegation as a number of other domains, such as tahamont.com, uilleann.co, fashionrunoff.com and two more.

The name servers of jef.us overlap at least partially with those of other domains — among them netclubs.com, gaudet.biz, lbalm.com and two more.

These name servers commonly co-occur with the name servers ns3.hover.com, ns1.domaindirect.com, ns2.domaindirect.com and ns3.domaindirect.com.

ns1.hover.com resolves to 216.40.47.26 and 2604:4000:0:d:216:40:47:26. Likewise, ns2.hover.com resolves to 64.98.148.13 and 2604:4000:2800:d:64:99:148:13 — two IP addresses apiece.

Mail Servers

The MX records for jef.us point to two mail servers: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

jef.us has the same mail server arrangement as a number of other domains, for example theupstairsroom.com, rexvs.com, despairlabs.com and two more.

The mail servers for jef.us overlap at least partially with those of other domains, including itech.ee and betine.com.

Host names resolving to 8 IP numbers:

in1-smtp.messagingengine.com maps to 103.168.172.216, 103.168.172.217, 103.168.172.218 and 5 additional IP addresses.

Hosts pointing to four IP addresses:

in2-smtp.messagingengine.com resolves to 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.

jef.us - robtex.com

jef.us

us

Previously NS for

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`jef.us`

`us`